Nicole Jones A cancer diagnosis shakes the earth beneath your feet.
In the days that follow, most people do what any of us would do: they start looking for information. They search. They scroll. They ask friends. They join online groups. They read articles at midnight when sleep won’t come.
And almost immediately, they encounter misinformation.
A 2025 study from the University of Florida Health Cancer Center found that 93% of patients newly diagnosed with cancer had been exposed to at least one type of cancer-related misinformation. What’s important, and sobering, is that most patients weren’t actively looking for it. It showed up in their social feeds, arrived via group texts, or was shared by well-meaning family members.
By the time a patient walks into an oncology appointment, there’s a good chance they’ve already heard about high-dose vitamin C, extreme dietary protocols, “immune-boosting” supplements, or therapies positioned as gentler alternatives to chemotherapy.
What the Research Found
In the UF study, researchers surveyed 110 patients who had been diagnosed within the previous six months with prostate, breast, colorectal, or lung cancer. They asked whether patients had encountered information about:
- Vitamins and minerals
- Herbs and supplements
- Special diets
- Mind-body approaches presented as substitutes for treatment
- Other unproven therapies
They also asked about common misconceptions, such as whether sugar uniquely “feeds” cancer or whether certain supplements can cure it.
RELATED EBOOK: Sugar and Cancer: What You Need to Know to Reduce Risk and Improve Your Health
You might assume TikTok and YouTube are the biggest sources of misinformation. But that’s not what the data show. The most common source? Other people.
Close friends, family members, and acquaintances — often acting with genuine care — are the primary pathway. A tip from a friend of a friend. A claim from a niche podcast. Something shared with conviction, then passed along again.
Websites, social media platforms, and news outlets followed closely behind as the source of misinformation.
Even more concerning, many patients don’t bring these claims into conversations with their oncologist. They may worry about being judged or dismissed. So instead of discussing it openly, they keep it to themselves and sometimes try these “cures” out of fear, hope, or desperation.
The Trust Gap
That silence matters.
When life suddenly feels uncertain, it is human to look for ways to regain a sense of control. If someone says, “There’s something more you can do,” that message can feel hopeful and empowering. We can’t help but latch on.
At the same time, we live in an information environment designed to reward intensity. Emotionally charged claims travel faster than careful explanations. A headline promising a “breakthrough” or “miracle” will almost always spread more quickly than a discussion of clinical trial phases or evidence hierarchies.
Technology companies are well aware of this. In fact, major platforms like Google and Meta restrict advertisers from targeting individuals based on sensitive health conditions, including cancer, because of the risk of exploitation. While those safeguards help, algorithms still tend to amplify content that generates strong reactions such as fear, urgency, outrage, or even hope. The more a post is shared or commented on, the more visible it becomes. And visibility can easily be mistaken for credibility.
Artificial intelligence adds another layer. A recent study published in The Lancet Digital Health found that large language models failed to challenge medical misinformation nearly one-third of the time when researchers fed them fabricated medical claims written in confident, authoritative language. Instead of correcting the false premise, the models often generated responses that treated the claim as true.
As patients increasingly turn to AI tools to interpret health information, this underscores an important point: confidence does not equal accuracy. Whether the source is a social post, a podcast, or an AI-generated response, information that is written clearly and assertively can feel polished and trustworthy, even when the underlying science does not support it.
Curiosity is not the problem. Curiosity is healthy. It leads patients to ask questions, seek information, and stay engaged in their care.
The concern arises when unproven approaches are framed as replacements for evidence-based treatment.
Research consistently shows that patients who rely on alternative therapies alone instead of conventional cancer treatment face worse outcomes. At the same time, there is strong and growing evidence that lifestyle factors such as nutrition, physical activity, stress management, sleep, and environmental exposures meaningfully support overall health and survivorship.
For Healthcare Professionals: Assume Exposure
For clinicians, the UF study points to a subtle but meaningful shift in mindset.
Instead of asking, “Has this patient been exposed to misinformation?” it’s best to assume the answer is yes. Exposure is no longer the exception. It’s now the norm.
The researchers are piloting what they call an “information prescription.” The idea is straightforward: provide vetted, evidence-based resources at the time of diagnosis, before misinformation has a chance to fill the void.
It is a small intervention with potentially significant impact. Rather than waiting for alternative claims to surface, a clinician might say:
“You’re likely going to see a lot online. Some of it will be helpful, and some of it may not be. Here are a few sources I trust. And if you come across anything you’re curious about, please bring it in. We can review it together.”
That simple framing accomplishes several things. It normalizes exposure. It validates curiosity. It invites dialogue instead of shutting it down.
In busy oncology practices, time is limited. No clinician can fact-check the internet during a 20-minute visit. But even a brief acknowledgment can open a door. It signals that questions are welcome. It reduces the risk that patients will quietly experiment with unproven approaches. Most importantly, it strengthens trust.
For oncology teams, this approach reinforces something already central to their work: partnership. Patients are not passive recipients of care. They are active participants. Offering guidance early helps channel that engagement toward evidence-based complementary strategies that support, rather than undermine, medical treatment.
For Patients: How to Pause and Evaluate
If you or someone you love is navigating cancer, bold claims are almost inevitable. Some will sound hopeful. Others may feel urgent or even persuasive.
Before acting on a new idea, it can help to pause and ask a few steadying questions:
- Does this source cite peer-reviewed research, or is it relying primarily on testimonials?
- Is this approach presented as a complement to medical care, or as a replacement for it?
- Is someone selling a product, supplement, or program connected to this claim?
- Are respected cancer organizations or academic medical centers discussing this approach?
- Does this claim promise certainty, quick fixes, or guaranteed outcomes?
You do not need to become a researcher overnight. But slowing down long enough to ask these questions can create space between emotion and action.
If you plan to act on treatment advice that you read about online or heard from somewhere else, it would be advisable to run this by your provider before making a change. Most oncologists and integrative providers would much rather review a claim with you than have it quietly influence a treatment decision you make. These conversations are part of shared decision-making, not a sign of distrust.
Wanting to do more for your health is understandable. That desire reflects engagement, strength, and hope.
The key is making sure that “more” is grounded in evidence and works alongside your medical care, not against it.
A Balanced Path Forward
Misinformation is now part of the landscape of cancer care. Ignoring it does not protect patients or clinicians.
Patients need information that respects both their intelligence and their vulnerability. That perspective guides our work at the Anticancer Lifestyle Program.
As a nonprofit, we focus on providing free, research-supported lifestyle guidance in the areas of nutrition, physical activity, stress management, sleep, and environmental exposures. These are areas where strong, growing evidence demonstrates meaningful impact on overall health and survivorship. The American Cancer Society estimates that about 40% of new cancer cases are linked to lifestyle behaviors, underscoring how much everyday choices can matter.
We offer proactive, credible education designed to strengthen trust between patients and their care teams through accessible, patient-friendly resources:
- A “Learn Your Way” resource hub to explore topics at your own pace
- A comprehensive, evidence-based 9+ hour online course
- Live, small-group Learning Circles that provide structure, support, and community for those ready to make a deeper commitment
- Free, downloadable eBooks grounded in current research
- Expert-led webinars featuring leaders in integrative and lifestyle medicine
- Short, structured 7-Day Kickstarts designed to help people build sustainable habits without overwhelm
In a world full of loud claims and simple answers, patients deserve information they can trust.
